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Related Experiment Videos

Stripe glasses: self-generated randomness in a uniformly frustrated system

Schmalian1, Wolynes

  • 1Department of Physics and Astronomy and Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA.

Physical Review Letters
|September 16, 2000
PubMed
Summary

Systems with competing interactions can spontaneously form glassy states due to frustrated interactions, not disorder. This leads to slow relaxation and inhomogeneous states in doped Mott insulators.

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Area of Science:

  • Condensed matter physics
  • Materials science

Background:

  • Doped Mott insulators exhibit complex behaviors due to competing interactions.
  • Understanding stripe formation is crucial for materials design.

Purpose of the Study:

  • Investigate the origin of glass transitions in systems with competing interactions.
  • Characterize the resulting dynamics and emergent states.

Main Methods:

  • Theoretical modeling of systems with competing interactions on different length scales.
  • Analysis of frustrated interactions and their role in phase transitions.

Main Results:

  • Demonstrated a self-generated glass transition in the absence of quenched disorder.
  • Identified an exponentially large number of metastable configurations.

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  • Observed slow, landscape-dominated relaxation dynamics.
  • Found a breakup into a disordered inhomogeneous state.

    • Conclusions:

    • Frustrated interactions, not disorder, drive glass transitions in these systems.
    • The system self-organizes into a complex, glassy state with slow dynamics.
    • This provides a mechanism for stripe formation and inhomogeneity in materials.